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(No- Model.) 2 Sheets-Sheet 1..

' E. HAIGH 85- E. HARG'REAVES STOP MOTION FOR SPINNING MAOHINES.

L .194. Patented Sept. 30, 1890'.

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7 l 2 SheetsShe et 2 E. HAIGH 85 E. HARG REAVES, STOP MOTION FOR SPINNING MACHINES.

Patented Sept. 30,* 1890.

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WITNESSESf I Wx/ M By WM flttorney.

. UNI-TED STATE-S:

PATENT OFFICE.

EDWARD HAIGH AND EDlVIN HARGREAVES, OF HUDDERSFIELD, ENGLAND.

STOP- MOTION FOR SPINNING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 437,194, dated. September 30, 1890. I Application filed November 23, 1889. Serial No. 331,285. (No model.) Patented in England November 1 1, 1887, No. 15,416-

To all whom it may concern.-

Be it known that we, EDWARD HAIGH and EDWIN HARGREAVES, both subjects of the Queen of Great Britain, residing in Huddersfield, Yorkshire, England, have invented certain new and useful Improvements in Stop- Motions for Spinning-Machines, (for which we have obtained British Patent- No. 15,416, dated November 11, 1887,) of which the following is a specification.

This invention has reference to stop-motions employed in machinery for spinning, twisting, or doubling woolen, worsted, cotton, or silk yarns for stopping the rotation of the spindle when the yarn or threads break, the object of our improvements in such stop-n10- tions being, first, to stop the rotation of the spindle and separate the drawing-rolls when one or more threads of yarn break before they are twisted together, and, secondly, to stop the rotation of the spindle and separate the rolls when the yarn breaks after it has been twisted, whereby waste of yarn resulting from breakage thereof is reduced to a minimum.

In order to carry out the first part of our invention, we employ, in conjunction with suitable eyelets supported loosely in a bracket connected to the top of the machine, a plate, preferably arranged to reciprocate or slide backward and forward in a horizontal plane, such plate being provided with slots or openings of the same number as and corresponding to the eyelets employed. Reciprocatory or backward and forward motion is given to the said plate by means of a suitably-arranged lever, operated by another lever secured to a horizontal rock-shaft extending the full length of the spinning-machine. The top drawingroller is made capable of being raised out of contact with the bottom or driven drawingroller when the yarn breaks, either before or after being twisted, by means of one end of a suitably-shaped lever, whose opposite end is connected by a vertical rod to the knockingoff mechanism of the driving-band. The yarn or threads of yarn to be twisted are to be threaded through the before-mentioned eyelets, through or partially around suitable guide-eyes and between the drawing-rollers, when they will be twisted together by the rotary action of the spindle upon which said twisted yarn is subsequently woundQ When one or more of the threads of yarn previous to being twisted or spun break, the eyelet or eyelets through which they were threaded and which were supported thereby being deprived of theirsupportwill fall, in doing which their lower ends pass through the slots or openings corresponding to the said eyeletsmade in the reciprocatory plate,'by which means the said plate is held stationary, ornearly so, and by means of I the lever connected to said plate and a weighted lever having a catch 'or projection thereon, upon which rests a sneck or lug projecting from oneside of the lever connected with the knocking-01f mechanism, the

catch is withdrawn from under the said'sneck orlu g, thereby allowing the latterle'ver to'move upon' its fulcrum in such manner that the knocking-off mechanism is operated'and the rotation of the spindle immediately stopped. When the ends have been tied together, the attendant operates the lever connected with the knocking-off mechanism, whereby the several parts are replaced in their former positions.

In order that our invention may be more fully understood, we will herein make reference to the figures on the accompanying sheets of drawings, and to the numerals of reference marked thereon. 1

Figure 1 is a sectional elevation of so much of a doubling or twisting frame as is necessary to show the application thereto of our improved stop mechanism; Figs. 2 and 2, enlarged elevations of the upper and lower parts of the stop mechanism, showing in full lines the positions the parts assume when one of the threads of yarn has 'broken' and the knocking-off mechanism has been operated so as to stop the rotation of the spindle; and Fig. 3 is a plan view, partly broken away, of the device shown in Fig: 2. a Fig. 4 is a similar View to Fig. 2, but shows the lever 16 depressed. Fig. 5 is a detail side View of lever 16 and its co-operating parts. .Fig. Gis a detail plan View of the roll-driving mechanism.

1 is the frame-work of the machine; 2, the spindle, driven by means of the fast whirl 3 and driving-band 4 from the tin cylinder 5 in the ordinary manner. The driving-band 4,

when traveling in one direction passes over a tension-pulley 6, mounted on a stud 7, projecting from one end of a lever 8, pivoted at M0 the bracket 10, the same end of said lever carrying a projection 11, which is employed for coming in contact with the spindle 2, so as to stop its rotation, as shown in Fig. 2, when the knocking-off mechanism has been operated by the breakage of yarn, as hereinafter described.

To the lever 8 is connected one end of a rod 15, the upper or opposite ,end of which is connected to one end of a tumbling lever 16, pivoted at 17 to the bracket or pedestal 18, bolted to the rail 19, said lever 16 being provided at its opposite end with a handle 20.

Projecting from the side of the tumbling lever 16 is a sneck or lug 21, (see Fig. 5,) which when yarn is being twisted and wound onto the spindle, rests upon and is supported by a catch 22, projecting from the side of the weighted lever 23, centered or hinged at 21 to the upper part of the pedestal 18. The hinged lever 23 also carries a stud 25, upon which is mounted a lever 26, the lower end thereof carrying a stud 27, entering into a slot 90, formed in the lever-arm 28, mounted 011 the rocking shaft 29,extending the length of the machine, while the upper end of said lever 26 is connected at 30 to the reciprocatory plate 31, which passes through and is capable of sliding backward and forward in the opening 32 made in the pedestal 18, said plate having slots or openings formed therein (see Figs. 2 and 3) of the same number as and eorrespondin g to the eyelets 3i employed, the latter being arranged above the said plate 81 and supported loosely in the pedestal 18.

35 is the bottom or driven drawing-roller, and 36 the upper drawing-roller, which is driven by frictional contact with roller 35. The drawing-roller 36 is supported by a b racket 37, hinged at 38 to the pedestal 18, the lower extremity of said bracket resting against the curved end of the tumbling lever 16. For the purpose of giving the requisite rocking motion to the shaft 29, we mount apinion 09 on the shaft 91 of the driven drawing-roller 35, which gears with a pinion 40, carried by a stud 92, projecting from the side of the machine. One end of a rod 11 is connected eccentrically to the face of the pinion -10, the opposite end of said rod being connected to the free end of lever 12, mounted on the rocking shaft 29, (see Fig. 1,) so that when rotary motion is communicated to the pinion 10 by the pinion 39 a rocking motion is given to the shaft 29 by means of-rod 11 and lever 42.

The threads of yarn to be twisted are caused to unwind from the bobbins 43, and may or may not be passed over or under suitable guide rails. Then theyare threaded through the eyelets 34, through the eyelet 41, around the top drawing roller 36, and thence are passed through the hook 15 and conducted back between the drawing-rollers, through the eyelet 46, connected to the hinged lever 47, and are finally conducted to the spindle 2 to be wound onto the bobbin 93 thereon. The tension of the threads of yarn between the bobbins 43 and the drawing-rollers 35 and 36 lifts the eyelets 34, so that their lower ends are clear of the plate 31, which plate, when the machine is in motion, is caused to reciprocate or move backward and forward by means of the lever 26, operated by the oscillating lever-arm 28 on the rocking shaft 29, the said shaft receiving its rocking motion by means of lever 42 and rod 41 from pinionwheel 40, as previously explained. As long as the threads of yarn previous to beingtwisted remain intact or unbroken the lever 26 has its fulcrum on the stud 25 upon which it moves, and consequently reciprocates the plate 31 to the extent indicated by dotted lines in Fig. 4, the tumbling lever 16 being held in the position shown in Fig. 1 and shown in dotted line in Fig. 2 by the catch 22 on the lever 23, thereby holding or supporting the knocking-oil mechanism in the position shown in Fig. 1 and shown in dotted lines in Fig. 2, so as to allow rotary motion to be communicated from the tin cylinder 5 to the spindle; but immediately a thread or end breaks the eyelet 34, through which it was threaded and which was supported thereby, having lost such support, will fall, so that when the reciprocatory plate 31 reaches the end of its backward movement and exposes a portion of the slots or openings made in the said plate, as shown in Fig. 2, the lower end of the eyelet will pass through the slot in the plate correspondin g thereto, thereby holding such plate and preventing its return movement, by reason of which the fulcrum of the lever 26 is changed from the stu 25 to the part marked 30, so that on the return movement of the lever 28 the lever 26, together with the weighted lever 23, is forced from the positions shown in dotted lines to those shown in full lines in Fig. 2, whereby the catch 22 is withdrawn from under the sneck or lug 21 on the end of the tumbling lever 16. Immediately the said lever 16 is released it is drawn into the position shown in full line in Fig. 2 by the weight 1.2 on the lever 8. (See Fig. 2%) Consequently the pulley 6 lifts the driving-band 4 from the fast whirl 3 onto the loose whirl 3', whereby the driving of the spindle is discontinued, and simultaneously therewith the projection 11 on the end of the lever 8 is forced against the spindle 2, acting as a brake, as shown in Fig. 2", and stops the spindle. \Vhen the tumbling lever 16 is moved upon its fulcrum by the weight of the knocking-off mechanism, the curved end of the said tumbling lever in ascending forces the bottom end of the bracket 37 outward, and thereby raises the top drawing-roller out of contact with the bottom (1 rawin g-roller, so that further delivery of the yarn is prevented until the broken ends have been tied and the parts replaced in the positions shown in Fig. 1 and shown in dotted lines in Fig. 2.

It will be understood that as long as the parts remain in the positions shown in full lines in Fig. 2 the lever 26 will work or oscillate upon the stud 30, connecting it to the reciproeatory plate 31, thereby allowing the plate to remain stationary,or nearly so, until the ends have been tied; but when the at tendant depresses the handle 20, lifting the sneck or lug 21 onto the catch 22 and operatin g the knocking-off mechanism so that the driving-band is moved onto the fast pulley 3 and communicates rotary mot-ion to the spindle, then the lever 26 again works upon the fulcrum and gives the requisite reciprocatory motion to the plate 31, the drop wire or stem of eyelet 34 engaging with the reciprocating plate, having previously been restored to its raised position, and the thread drawn tight, so as to support it clear of plate 31.

The second part of our invention relates to means to be used in combination with the mechanism above described for stopping the rotation of the spindle when the twisted yarn, or that portion of the yarn between the drawing-rollers and the spindle, should happen to break.

In order to accomplish this part of our i11- Vention, we connect or cast a projecting piece 48 on the front end of the reciprocat-ory plate 31, which will therefore move backward and forward with the said plate. that when the twisted yarn is intact the lever 47 will be held in the position shown in full line by the tension of the yarn upon the eyelet 46; but when the yarn is broken the tension thereof upon the said eyelet is removed, and the weighted rear end 95 of the lever descends and rests upon the stop-piece 49, as shown in dotted lines in Fig. 4, so that 011 the next forward movement of the reciprocatory plate 31 the projecting piece 48 will come against the weighted end of the lever 47, which prevents the said plate completing its movement in that direction, whereby the fulcrum of the lever 26 is changed and the knocking-off mechanism operated so as to stop the rotation of the spindle in precisely the same manner as previously described.

Each spindle in the machine has one of our improved. stop mechanisms connected therewith, and in order that the wholeseries of stop mechanisms may be simultaneously rendered inoperative just before the machine has stopped or until it has begun to run we provide the pinion 39 with a feather or key, which slides in a corresponding groove 100, formed in the shaft 91. A neck 50 is formed in the collar 96 of the pinion 39, into which enters a projection or fork 97, carried by the hand -lever 51, so that when said hand-lever is moved to the position indicated by the dot- It will be seen thread or threads of yarn break, either previous to or after being twisted, whereby waste of yarn resulting from breakage thereof will be reduced to a minimum.

We claim as-our invention- 1. The combination,with a yarn-suspended eyelet and the slotted reciprocatory plate 31, of the revoluble drawing rolls, a pivoted bracket supporting one of the said rolls, beltshifting devices, substantially as described, the lever 26, the lever 23, having a lug 22 and pivotally connected to the lever 26, the pivoted lever 16, having a catch 21 engaging with the said lug, and means for operating the said lever 26, the devices being operative to simultaneously shift the belt and separate the drawing-rolls when the motion of the plate 31 is arrested by the fall of the said eyelet due to the breakage of the yarn which supports it, substantially as set forth.

2. The combination, with the frame 18, eyelets 34, and reciproca-tory plate 31, provided with slots 33, of the lever 26, pivoted to said plate, the lever 23,-suspended from the frame 18 at one end, said two levers being pivotally connected, the lug 22 on the lever 23, the lever 16, provided with catch 21, knocking-off devices in connection with said lever 16, and means for reciprocating the lever 26, substantially as and for the purpose set forth.

3. The combination, with the revoluble spindle 2,provided with fast and loose whirls, the driving-cylinder, and the driving-band, of the pivoted lever provided with a weight and a pulley for shifting the band, the supporting-rod 15, adapted to release the said weight upon the breakage of a yarn, and the brakeplate 11, secured to said lever and adapted to retard the motion of the spindle when the driving-band is moved onto the loose wheel by the said weight, substantially as set forth.

4. The combination, with the lower roll and the pivoted bracket provided with an overhanging upper end for supporting the said upper roll, of the pivoted lever 16, adapted to bear against the lower end of the said bracket, and thereby hold the said rolls apart when the stopping is efiected, and a handle proj ecting from the said lever for turning it on its pivot, substantially as and for the purpose set forth.

In Witness whereof we have hereunto signed our names in the presence of two subscribing witnesses.

U EDVARD HAIGl-I.

EDlVIN HARGREAVES.

' States 

